Joining strip for metal shingles



Sept. 1950 c. F. SPERRY 2,522,067

JOINING STRIP FOR METAL SHINGLES Filed Aug. 11, 1947 2 Sheets-Sheet l Sept. 12, 1950 c. F. SPERRY 2,522,067

I JOINING STRIP FOR METAL SHINGLES Filed Aug. 11, 1947 2 Sheets-Sheet 2 I ll! lilllllllll lii fl j 4.4 44 I 1. zfi fivlllll 58 llliiili-L i'i llllll Patented Sept. 12, 1950 v UNITED STATES i TENT OFFICE Charles F. Sperry, Burbank, Calif assignor to Alumalux Company, Pasadena, Caliii, a corporation of Nevada Application August 11, 1947, Serial No. 767,906

iclaims. 1

This invention relates to a joining strip for metal shingles and has been primarily designed for use in connection with the metal shingles disclosed in my co-pending application, Serial No. 731,966, filed .March 3, 1947.

A primary object of the invention is to provide a joining strip that may be advantageously used to: effect a joint or connection between the adjacent edges of two adjoinin metal shingles sov as to effectively prevent leakage therebetween and which when regarded from the top of the roof will present a neat and attractive appearance.

In my co-pending application above referred to there is disclosed a roof which presents a Bermuda type appearance consisting of rafters on which sheathing boards are secured. These sheathing boards are so arranged as to he stepped; that is, their lower edges are slightly spaced from the rafters or other supporting structure. The top surface of each sheathing board slopes upwardly from its lower edge to a point adjacent the lower edge of the sheathing board next above where the lower edge of the next above sheathing board is disposed upwardly and of full thickness. Over these sheathing boards there are positioned metal shingles each shingle being of suitable length and covering its respective sheathing board from top to bottom thereof. Each shingle adjacent its upper edge is reversely bent providing a downwardly opened pocket and terminating in an upstanding flange constituting-a securing flange that can be nailed into the lower edge of the sheathing board next above. The reversely bent portion that provides the pocket is inserted between the underside of the sheathing board adjacent its lower edge and the rafter or supporting structure. The lower edge of each shingle is bent downwardly so as to cover over the securing flange of the shingle next below and has a returned portion which is designed to enter the downwardly opened pocket of the shingle next below. The improved joining strip is so designed as to be suitable for use in conjunction with shingles of this connection to effectively provide a joint between the adjacent edges of adjacent shingles and which will not mar or detract from the overall appearance of the roof.

Another object of the invention is to provide a joining strip that may be easily and economically manufactured and which can be easily assembled with metal shingles of this character.

With the foregoing and other objects in View,

which will be made'manifest in the followin 5 detailed description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

Fig. l is an isometric view of a joining strip embodying the present invention;

Fig. 2 is a partial View perspectively illustrating a roof of the type disclosed in my co-pending application and illustrating the joining strip embodying the present invention as having been incorporated in the roof construction;

Fig. 3 is a sectional View taken substantially upon the line 3-3 upon Fig. 2;

Fig. 4 is a transverse sectional vie-w through the joining strip and through the adjoining shingles and may be regarded as taken substantially upon the line ll upon Fig. 3; and

Fig. 5 is a partial View in Vertical section taken substantially upon the line 5-5 upon Fig. i.

Referring to the accompanying drawings wherein similar, reference characters designate similar parts throughout, the roof as disclosed in my co-pending application consists of rafters or other supporting structure indicated at it on which sheathing boards l l, 12 and it, for example, are positioned in slightly overlapping and stepped relation. These sheathing boards may either be supported on tapered blocks it that are mounted on the rafters It or the sheathing boards may themselves be out so as to be tapered and assume a position wherein their upper edges are disposed beneath the lower edges of the sheathing boards next above and in slight spaced relationship thereto so that there are small re cesses l5 beneath the lower edges of the sheathing boards. Each metal shingle or roofing strip is of suitable length one of which is indicated at 18. This shingle adjacent its upper edge is reversely bent as at H providing a downwardly open pocket indicated at l3 and the reversel-y bent portion is then bent upwardly at right angles to form a securing flange 19 that is adapted to be fastened to the bottom edge of the sheathing board next above such as by nails Each shingle near its lower edge is bent downwardly as indicated at 2! forming a covering flange that may cover the heads of the nails 20 on the shingle next below and is then returned as indicated at 22 providing a flange portion that enters the pocket ll] of the shingle next below.

The above described construction in general conforms to the disclosure made in my co-pending application. However, instead of merely overlapping the side edges of the shingles where they adjoin one another I provide a joining strip. This strip as illustrated in Fig. 1 consists of a lower or main section of sheet metal indicated at 23 which near its upper edge is reversely bent as at 24 providing a downwardly open pocket 25. The reversely bent portion is then bent upwardly at right angles as indicated at 26 in a manner to provide a securing flange corresponding to the securing flange l9. Near the bottom edge the strip or section 23 is bent downwardly as indicated at 2'! to be positioned over the bottom edge of the sheathing board to which it is applied. Near the center of the section 23 the section is embossed upwardly forming on the underside of the section a curve 28 and on the upper side a bead or rib 29. This bead or rib extends from the reverse bend 24 downwardly to the flange 27 and may continue downwardly over the face of the flange 21. A suitable waterproof r water resistant mastic indicated at 38 (see Fig. 5) is then applied to the rib or bead 29 and a relatively narrow strip of sheet metal 3| is applied to the section 23 so as to straddle the rib or bead. This second section of sheet metal has its upper end extending into the pocket 25 and is spot welded as indicated at 32 at intervals along the length of the section 3 I. In performing the spot welding operation the spot welds 23 are formed between the section 3|. and the bead 29 directly through the mastic 30 thus rigidly and permanently securing the section 3| centrally to the section 23 intermediate the side edges of the section 23. Those portions of the section 3! which extend laterally from the line of spot welds are slightly spaced from the section 23 a distance sufiicient to accommodate the adjacent edges 33 and 3d of adjoining shingles or roofing sections 35 and 36. The lower end of the section 3| extends beyond the point at which the flange 2? is bent downwardly as indicated at 31 and carries a returned portion 38 capable of entering the pocket l8 of the shingle or roofing section next below. When initially supplied the downwardly bent portion 31 extends downwardly at an angle to the flange 2i so as to be in spaced relation thereto.

As illustrated on the drawing, the roofing sections or shingles are preferably slightly corrugated to break the uniformity in appearance of the sheet metal although this is not essential.

Where the shingles or roofing sections are thus slightly corrugated the sections 23 and 3! are similarly corrugated as illustrated. The use of such corrugations, however, is not essential. In applying the shingles or roofing sections to the stepped sheathing boards and using the joining strip a shingle such as the shingle It or 36 is positioned on the sheathing board with its reversely bent portions ll extending into the pocket [5. The nails or fasteners 20 can then be driven into the securing flange l9 and into the sheath ing board next above thus mounting the shingle or roofing section on its respective sheathing board II as illustrated on the drawing. At the side edge of the section 35 the joining strip embodying the present invention is applied and in so doing it is merely necessary to position the flange 26 against the sheathing board I 3 and slide it laterally with relation to the secured shingle 36. In so doing that portion of the lower section 23 is slipped beneath the edge 34 of the shingle 3G and the edge fi l is then caused to enter the space between the section 1% and the section 23. When the joining strip is thus positioned it may be secured in position on the sheathing board II by driving fasteners through the securing flange 26 into the sheathing board l3 next above. The roofing section or shingle 35 may then have its edge 33 slid on the lower section 23 so as to enter the space between the section 23 and the upper section 3| and may be secured in position by driving nails 20 through its securing flange l9. When the various shingles and joining strips are thus assembled together on the roof the portions 31 may be bent downwardly so as to overlie the spaces between the flanges 2| and the returned portions 38 are caused to enter their respective pockets l'8 beneath the returned portions 22 on the shingles. In this manner it will be appreciated that the improved joining strip when used will not only effectively prevent leakage between the side edges of adjoining shingles or roofing sections but will present a neat and attractive appearance in that on the upper side of the roof there is merely exposed the upper surfaces of the relatively narrow sections 3! which overlie the beads between the edges 33 and 34. The securing flanges It on the roofing sections overly the securing flanges 26 of the joining strips and although there will be slight spaces therebetween approximately equal to the space between the edges 33 and 34 these spaces will be covered by the covering flanges 2| of the shingles next above. In constructing a roof of this character, it is usually desirable to have the joints between the edges 33 and 34 of adjoining shingles in any one tier or on any one sheathing board disposed in staggered relation to the joints between the shingles or adjacent sheathing boards.

In the above described construction it will be appreciated that an improved joining strip is provided which may be easily and economically manufactured and which may be assembled together with shingles or roofing sections to effectively perfect the joint between the side edges of adjoining shingles.

Various changes may be made in the details of construction without departing from the spirit and scope of the invention as defined by the appended claims.

I claim:

1. A joining strip for metal shingles comprising a section of sheet metal having its lower edge bent downwardly and which adjacent its upper edge is bent reversely to provide a downwardly open pocket and then upwardly to provide a securing flange and a second section of sheet metal secured centrally to said section having laterally extending portions beneath which the adjacent edges of adjoining shingles may be positioned the lower end of said second. section extending beyond the downwardly bent lower edge of the first section and bent downwardly and then returned at right angles to the downwardly bent portion so as to extend into the pocket of a subjacent shingle, said second section having its upper end extending into the reverse bend of said first section.

2. A joining strip for metal shingles comprising a first section of sheet metal which adjacent its upper edge is reversely bent and the reversely bent portion being then bent upwardly to provide a securing flange, said section adjacent its lower edge being bent downwardly, there being a longitudinally extending bead formed on said section, mastic on the bead, a second section of sheet metal having its upper end extending into the reverse bend of the first section and having its lower end projecting beyond the downwardly bent portion at the lower end of the first section and then returned at right angles, said second section being positioned so as to straddle the bead and being spot welded to the first section through the mastic.

3. A joining strip for metal shingles comprising a first section of sheet metal which adjacent its upper edge is reversely bent to provide a downwardly open pocket, and a second section of sheet metal secured to said first section intermediate the side edges of the first section and having laterally extending portions beneath which the ad jacent edges of adjoining shingles may be positioned and having its upper end extending into the reverse bend of said first section.

4. A joining strip for metal shingles comprising a first section of sheet metal which adjacent its upper edge, is reversely bent to provide a downwardly open pocket and having its lower edge bent downwardly, and a second section of sheet metal secured to said first section intermediate the side edges of the first section and having laterally extending portions beneath which the adjacent edges of adjoining shingles may be positioned and having its upper end extending into the reverse bend of the first section and having its lower end bent downwardly.

CHARLES F. SPERRY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Great Britain 1938 

